Because it’s all meaningless propaganda and is meant to not reflect, talk about or address reality at all.
Which is why it’s so toxic for society. Fiction’s supposed to mirror or discuss important aspects of real life, but it doesn’t anymore, and because of it, people have no guidance, and society crumbles.
I would imagine the population will stabilize itself and/or we will begin human expansion into space before that becomes an issue, but that is a thing I read about. There is a hard maximum number of people that could live on this planet in modernity. 🤔 I’m not sure how having space solar power now would make that an issue though. The heat issue is something we’ll have to think about down the line.